Modulation by Linear Maximal Shift Register Sequences: Amplitude, Biphase and Complement-Phase Modulation

Abstract

The report describes the use of linear-maximal shift-register sequences either to amplitude modulate (AM) or to angle modulate a sinusoidal carrier. Two cases of angle modulation are considered: biphase modulation (BM) and complement-phase modulation (CM). In biphase modulation the carrier angle switches between (+ pi/2) and (- pi/2), whereas in complement-phase modulation the carrier angle switches between (+ pi/4) and (- pi/4). It is shown that the ratio of the average power to the peak power for AM is only one-half as large as for either BM or CM. On the other hand, the ratio of the carrier power to the average power for either AM or CM is one-half, but for BM this ratio is approximately zero. Finally, a replica-correlation technique for use with any of the three modulations is described.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1971
Accession Number
AD0735137

Entities

People

  • Kurt Metzger
  • Richard M. Heitmeyer
  • Theodore G. Birdsall

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Amplitude Modulation
  • Carrier Frequencies
  • Correlation Techniques
  • Michigan
  • Military Research
  • Modulation
  • Modulators
  • Peak Power
  • Phase Modulation
  • Power
  • Power Spectra
  • Sequences
  • Shift Registers
  • Spectra
  • Underwater Sound
  • Universities

Fields of Study

  • Physics

Readers

  • Analytical Mechanics
  • Computer Programming and Software Development.
  • Radio communications and signal processing.